MR. P. H. CARPENTER ON THE GENUS SOLA.NOCRINUS. 187 



The thorax (figs. 7 and 8) is arched, broadest in front, without 

 any marked incision between the meso- and metanotum ; the meso- 

 notum itself is, when seen from above, very broadly oval, almost 

 circular, rather broader in front and somewhat flattened behind. 

 -Figs. 7& 8 give outlines of the thorax, seen laterally and from above. 

 The legs are of moderate length, the hinder ones somewhat the 

 longest. The scale or knot (fig. 6) is heart-shaped, flat behind, 

 slightly arched in front, and with a few stiff", slightly diverging 

 hairs at the upper angles. The length is about two thirds of 

 an inch. 



DESCRIPTION OF PLATE VIII. 



Fig. 1. Camponotus infiatus. Head, seen from above, X20. 



2. ,, ,, Antenna, „ X25. 



3. ,, ,, Mandible, ,, „ 



4. „ „ Labium, „ 



5. „ ,, Maxilla, „ „ 



6. „ ,, Knot, seen from behind „ 



7. ,, „ Outline of thorax, seen from the side, 



X9. 



8. „ ,, Outline of thorax, seen from above, x9. 

 Pro. Pronotum ; Mes. Mesonotum ; Met. Metanotum. 



On the Genus Solanocrinus, Goldfuss, and its Relations to recent 

 Comatulce. By P. Herbert Carpenter, M.A., Assistant 

 Master at Eton College. 



-o s 



[Eead June 3, 1880.] 

 (Plates IX -XII.) 



The genus Solanocrinus was established by Goldfuss* to include 

 certain fossil Crinoids which he regarded as intermediate between 

 the stalked Pentacrini and the free Comatula. He placed them 

 among the stalked Crinoids, however, on account of their usually 

 having a centrodorsal piece somewhat deeper than that of the few 

 recent Comatulcs known to him ; so that he was led to regard it as 

 a short stem composed of but few joints. Between this so-called 



* ' Petrefacta Germanise,' i. p. 162. 

 LINN. JOTJRN. — ZOOLOGY, VOL. XV. 15 



