Mr. A. S. Hirst on new Fill-Millipedes. 215 



hair of the Swiss form is sliorter and greyer than that of 

 N. anomalus. The brain-case of the skull in the former species 

 is rounded and somewhat globular, wliile in the Spanish 

 animal it is flat in the anterior part and about the occiput, the 

 entire outline being not evenly convex, but nearly angular. 



Owing to the absence of iiair-fringe on the under surface of 

 the tail, N. anovialas has hitherto been confounded by Spanish 

 naturalists with Sorex araneus, a species that I have never 

 seen in the Peninsula. Under that name the specimens in 

 the Madrid Museum were exhibited. 



XXXIII. — On Four neio Fill-Millipedes from the Malaij 

 Feninsida and Siam. J3y A. S. HiRST (British Museum, 

 Nat. Hist.). 



[Plate X.] 



The four forms which I describe below as new seem to be 

 somewhat closely aJhed to one another. Their copulatory 

 feet present much resemblance and the walking-legs in all 

 four species are furnished with three spines above the ch^w. 

 Three of tliem come from the Malay Peninsula, and the 

 remaining one from Siam. Z. anthracina, Pocock, from the 

 Malay Peninsula, Z. impunctata, Pocock, from Penang, and 

 Z. semilcevis, Pocock, from South Tenasserim, are also 

 members of this species-group. The legs of these last species 

 were described by Mr. Pocock * as being provided with two 

 spines above the claw ; in reality, however, they are provided 

 with three. 



Zeplironia rugulosa, sp. n. 



Colour (faded, in spirit). Head, nuchal plate, and tiie first 

 tergite dark brown or black : tergites dark brown, the ante- 

 rior borders yellowish brown and ornamented with several 

 small dark spots + ; the last tergite with irregular dark spots. 



Head. Anterior region of the head marked witii tairly 

 numerous punctures, the posterior part sparsely punctured. 

 The anterior border with a single tooth. 



Nuchal plate with sparse and line punctures. 



First tergite convex anteriorly, the usual angle being almost 



* Ann. Mus. Civ. Genova, ser. 2, vol. x. no. 30, p. 5 (1890) ; Ann. & 

 Mag. Nat. Hist. ser. 6, vol, xvi. p. 413 (1895). 



t These spots are probably due to bad preservation. 



