168 HELICIDjE. 



Section TRICHOCHLOEITIB, Pilsbry. 



Trichochloritis, Pilsbry, Man. Conch, ser. 2, vi, 1891, p. 267; ix, 

 1894, p. 123 ; Wiegmann in Weber, Zool. Forsch. Reise Niederl. 

 Ost-Indien, iii, 1893, p. 189, pi. 13, fig. 10 (anatomy; C. crassula). 



" Shell depressed, rather thin, the spire low-convex or flat, the 

 base generally obtusely angled around the umbilicus. Epidermis 

 not deciduous ; apex and the whole shell hirsute or marked by 

 hair-scars arranged in regular lines ; lip thin, expanded or 

 narrowly reflexed." 



TYPE, Helix breviseta, Pfr. 



Range : Southern China to Borneo. 



Prof. Pilsbry states (1. c.) that the anatomy is unknown, 

 although in the next paragraph he refers to the genital system 

 of C. crassula having been figured by Wiegmann, and he proceeds 

 to compare this with that of C. porteri which, he says, it re- 

 sembles "except that the enlargement at the apex of the penis 

 is long and curved so long that Wiegmann calls it a penis gland, 

 although in my opinion it is not glandular, but simply a pouch- 

 like enlargement of the penis for the accommodation of a large 

 imperforate papilla." 



He continues: "The epiphallus bears the retractor, and is 

 continued beyond the insertion of the vas deferens in a short 

 flagellum. The duct of the spermatheca is much and abruptly 

 swollen at the base and the swelling is doubtfully interpreted 

 as a dart-sack and mucus gland by Wiegmann, who did not 

 open it, however. If his view is correct, the species must be an 

 Eulotella ; but I prefer to consider the structure as a mere 

 muscular enlargement of the spermatheca-duct, probably with 

 plicate internal walls, such as is often found in the Helices. The 

 union of dart-sack with spermatheca-duct would be an extremely 

 unusual character, if confirmed.'"' 



Pilsbry, while admitting that the sections of Chloritis appear 

 to intergrade by rather easy stages throughout, retains the name 

 Trichochloritis for the group of small, thin species having the 

 same distribution as Camama, and of the Indian species he includes 

 in it hemwpta, propinqua, shanica, colletti *, and bifoveata, while 

 delibrata, gabata, and helfori, which Mbllendorff on conchological 

 grounds included in Chloritis, he refers to Trachia. The generative 

 organs of delibrata, as figured by Pilsbry, show scarcely any dif- 

 ference from those of Chloritis, except that in the latter the cavity 

 of the penis contains an imperforate fleshy papilla at the apex. 

 Under these circumstances I prefer to follow Mollendorff in 

 his classification. 



* skanica and colletti, the types of which I have examined, certainly have 

 no immediate affinity with Chloritis, being undoubtedly Trachias. 



