Coleopterous Sub -Faultily Byrsopince (Curculionidce). 75 



declivity not noticeably larger than the others ; interval 3 with an 

 elongate and obHque basal callus, 2 with a shorter callus, and 5 with 

 a large humeral tubercle, which varies irrespective of sex, but is 

 usually smaller and less prominent in the S" ', infiexed margins 

 irregularly punctured and without sulci. Legs grey, usually mottled 

 with darker markings and set with long pale setae ; posterior tarsi 

 slender, with joint 1 scarcely longer than 2 ; the anterior pair with 

 joint 2 not transverse ; intermediate pair with joint 2 rather longer 

 than broad. 



Cape Colony: Constantia and Eondebosch [L. Peringuey and 

 W. F. Purcell), Stellenbosch {L. Peringuey). 



Type in the Stockholm Museum ; type of vitiosa also at Stock- 

 holm ; types of socia and sca^mlaris in the British Museum. 



From sulcicollis, Gyl., this variable species may most readily be 

 recognised by its shallow non-carinate thoracic furrow and the 

 irregular lateral punctuation of the elytra; the frontal carinae and 

 sulcate rostrum of sulcicollis are also distinctive, but less reliable, 

 characters. The tarsal characters afford the safest means of dis- 

 criminating lutosa from the even more variable hopei, Boh. Owing 

 to the great reduction of the humeral tubercle in the type of vitiosa 

 it presents a very different facies from the type of lutosa; but a 

 careful examination of a long series (some 80 specimens) shows that 

 this character cannot be regarded as of specific value, being, ap- 

 parently, more specially liable to reduction in the S" sex. 



13. Byrsops insincera. Boh. 

 B. insincerus, Boh., I.e. p. 404 (1842). 



Long. 6 ; lat. 3J mm. 



Colour black, with uniform brown scaling above, the sides varie- 

 gated with greyish white spots. 



Head with large shallow punctures and without frontal carinae. 

 Bostrum not carinate, punctured like the head and with the dorsal 

 edges rounded. Prothorax dorsally as long as broad, sides rounded, 

 broadest rather behind middle, ocular lobes slightly dilated at apex ; 

 upper surface coarsely and reticulately punctured, without any 

 central furrow or carinae, transversely impressed anteriorly but 

 without the usual foveae ; sides with deep separated punctures. 

 Elytra ovate, shoulders rounded, sides slightly ampliated, broadest 

 about middle, apical declivity rounded dorsally ; punctuation 

 irregular and subremote, intervals 6, 4 and the apical half of 2 

 with small subcorneal tubercles, the one at the top of the declivity 

 on interval 4 rather larger than the others, intervals 2 and 3 not 



