Key to the Chinese species of Carcinops

1 Carinal striae of prosternal keel not united with each other and punctiform in anterior and posterior ends. ........................................................................................................................................... C. sinensis Lewis

- Carinal striae of prosternal keel united with each other posteriorly and not punctiform in any ends ......... 2

2 Body surface coarsely punctate; carinal striae of prosternal keel bisinuate; mesoventrite with evenly large punctures ...................................................................................................................... C. pumilio (Erichson)

- Body surface less coarsely punctate; carinal striae of prosternal keel straight and slightly divergent posteriorly; mesoventrite with several large punctures only laterally ................. C. penatii Zhang & Zhou, n. sp.