64 MR. R. SHELFORD : THE BRITISH MUSEUM 



This is a mere fragment, the abdomen, legs^ and ventral thoracic sternites 

 having been destroyed, probably by some predatory insect^ but the wing- 

 venation and the type of coloration are eminently characteristic of the South 

 American section of the genus P seudophjllodromia. In my former paper on 

 Blattidse preserved in amber, I drew attention to the fact that, if any 

 comparisons at all were possible between the Oligocene amber fauna and a 

 modern tropical fauna, the Neotropical fauna was the only one which 

 presented features of similarity with the European Oligocene fauna. It is, at 

 any rate, noteworthy that amongst these scanty remnants of what was once an 

 extensive Miocene insect fauna occurs a species which has its nearest allies in 

 South America to-day. It is notoriously hazardous to draw conclusions from 

 insufficient data ; I do not therefore seek to establish any theory on the facts 

 just noted, but content myself with recording them, believing fully that one 

 day their real significance will be established. 



Ceratinoptera miocenica, sp. u. 



One female, No. 58557. 



General colour dark castaneous. Pronotum with anterior maroin coverino- 

 vertex of head, posteriorly slightly produced. Scutellum exposed, Tegmina 

 corneous, barely exceeding apex of abdomen ; venation mostly indistinct, 

 but anal vein deeply impressed. Abdomen piceous beneath ; subgenital 

 lamina semi-orbicular, ample. Cerci not visible. Legs rufous, hind-femora 

 with 6 spines on the anterior margin beneath, G or 7 on the posterior margin 

 beneath. 



Total length 8 mm. 



The unique specimen is enclosed in a large block of amber in which are 

 also embedded, besides several other insects of different orders, shreds and 

 fragments of vegetable tissue; one such fragment conceals most of the 

 ventral surface of the cockroach, and my description of the insect is therefore 

 much shorter than I should like it to be. The strong armature of the hind- 

 femora distinguishes the species from the four Oligocene representatives of 

 the genus, noted or described by me in my former memoir, and to the 

 best of my belief the species is also different from all known modern 

 Ceratinopterce. 



? Periplaneta sp. 



One female. No. 58652. 



This is a larva and I refrain from giving it a name, as the adult may be 

 found some day, and until that happens the exact generic position of this 

 immature specimen must remain in doubt. 



The general colour is pale ochreous, marked symmetrically with castaneous 

 blotches. The supra-anal lamina is trigonal, its apex notched. The cerci 



