342 Mr. G. A. Boulenger on 



Ptenidium conci'nnum, sp. n. 



L, c. 0*60 mm. Ovatum, postice attenuatum, nigrum, glabrum, 

 nitidissimum ; capite atquo pronoto magnis ; elytris parvis, angus- 

 tatis ; antennis longis, ro justis, atque pedibus laetissirae flavis. 



Six specimens taken in Grenada and St. Vincent. 



Tliis is a very pretty and very distinct species, easily recog- 

 nized by its shining black colour, attenuated elytra, and large 

 and very bright yellow antennae. It is very remarkable that 

 no other species of this universally distributed genus should 

 have been ibund in the West-Indian Islands. 



2 li roscidiu vi in v is ihile . 



Trichoptei'yx invisibilis, Nietner, Ann. «fe Mag. Nat. Hist. u. ,■<., xix. 

 p. 378 (1856). 



As I have already remarked in my preliminary observa- 

 tions, this very interesting and very peculiar insect seems to 

 be distributed throughout the whole tropic zone, and in all 

 those varied localities constantly to preserve one uniform type. 

 The more or less ochreous tint usually seen in mounted 

 specimens seems to have been produced by desiccation, for in 

 the most recently captured of those which I have examined 

 the life-colour appears to have been a very pale translucent 

 green. 



Gumley, Marliet Ilarborough, 

 January 1894. 



XXXVII. — List of Reptiles and Batrdchians collected bij Dr. 

 J. Bohls near Asuncion^ Paraguay* . By G. A. BOULENGEK. 



REPTILES. 

 Lizards. 



1. Polych'us acutirostris, Spix. 



2. Liocephalus caducus, Cope. 



Scartisciis caducus, Copo, 1862. 

 Liocephalus boUinanns, Bouloug. 1890. 



* For contributions to the herpetologicol fauna of Paraguay, (/. Cope, 

 Proc. Ac. rhilad. ISGi', p. 340, and l^oettger, Zeitschr. f. Naturw." (4) iv. 

 1885, pp. 213 aud 436, 



